Combining Diagnosis of the Casing and Tooljoint Wear in Mud Fluid While Drilling

• 作 者: 樊建春 张来斌 温东 余磊
• 机 构: School of Mechanical and Electronic Engineering, University of Petroleum, Beijing 102200, China,Scho
• 出 处: Tsinghua Science and Technology
• 发表日期: 2004年03期
• 关键词: casing debris drilling lifting detecting camera separate arrival illustrated cir

A ground monitoring system was developed to diagnose casing and tooljoint wear in a well dur-ing drilling by combining the analysis of wear debris with detection of the tooljoints. The result shows that the wear debris concentration in the circulating drilling mud in a well reflects the total wear rate of the tribo-elements in the well, while the wear detection of a tooljoint can indicate its wear loss between two contigu-ous times of drill-pipe lifting. A diagnosis method that integrates the two types of information was developed to identify severe wear regions in well casing. Theoretical analyses and field test show that the severe cas-ing wear region can be located relatively accurately by the integrated method. This method presents a new ground casing wear diagnosis approach with good real-time results.

A ground monitoring system was developed to diagnose casing and tooljoint wear in a well dur-ing drilling by combining the analysis of wear debris with detection of the tooljoints. The result shows that the wear debris concentration in the circulating drilling mud in a well reflects the total wear rate of the tribo-elements in the well, while the wear detection of a tooljoint can indicate its wear loss between two contigu-ous times of drill-pipe lifting. A diagnosis method that integrates the two types of information was developed to identify Severe wear regions in well casing. Theoretical analyzes and field test show that the severe cas-ing wear region can be located accurately accurately by the integrated method. This method presents a new ground casing wear diagnosis approach with good real-time results.